[quote=@Pepperm1nts]
New Zealand's population in 1980, according to Google, was 3,113,000. If New Zealand's military is 10% of that, then it's total military strength is 311,300. That is if New Zealand is, for whatever reason, pushing its military numbers to the max. If it's not (as is more likely), then it's probably less than that. But that depends on how much of the population you want in the military.
[/quote]

I'm just going to add that NZ probably cannot sustain that number. Having that many people in the military means you have to be able to pay them and arm them, and that can be expensive. New Zealand also will not realistically have the power projection to be able to send that many people over seas, which means a sizable army is pointless.